# CIRCUL RING vs SLEEPON 3

The clearest difference is review sentiment: SLEEPON 3 at 35% against CIRCUL RING's 13%. CIRCUL RING's advantage is rating (2.3 vs 2.1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CIRCUL RING holds the better App Store score, 2.3 against 2.1. Both are backed by a comparable volume of ratings — 34 and 30 respectively. Written reviews complicate that: 13% of CIRCUL RING's written reviews are positive against 35% of SLEEPON 3's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | CIRCUL RING | SLEEPON 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (34 ratings)](https://appshunter.io/ios/app/circul-ring/id6476754730/reviews)** | [2.1 (30 ratings)](https://appshunter.io/ios/app/sleepon-3/id6497714109/reviews) |
| Number of ratings | **34** | 30 |
| Positive reviews | 12.9% of reviews | **35.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 106 MB | 67 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [BodiMetrics, LLC](https://appshunter.io/developer/1037690466) | [Shenzhen Sleepon Technology Co., Ltd.](https://appshunter.io/developer/1385995936) |

## What reviewers say

### CIRCUL RING

[App page](https://appshunter.io/ios/app/circul-ring/id6476754730)

This app tracks your sleep quality, daily activity, and key health indicators. It provides personalized insights and trends to help you understand and adjust your physical state. Professional sports data recording is also included.

**Highlights:** Sleep monitoring (heart rate, stages, temperature), Daily activity tracking (heart rate, steps, calories), Health indicator trend analysis, Professional sports data recording, Personalized health tips

**In-app purchases:** none


### SLEEPON 3

[App page](https://appshunter.io/ios/app/sleepon-3/id6497714109)

This system provides a home sleep testing solution using a wearable device and a mobile app. It analyzes sleep data to identify potential issues and build long-term sleep profiles for proactive risk assessment. It's designed for various age groups and individuals with specific health concerns.

**Highlights:** Home sleep testing system, Wearable sleep ring, Companion mobile application, sleepFit™ algorithm, Vital biological data capture, Sleep health issue identification, Long-term sleep profile establishment

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ❤️ Accurate blood oxygen testing
- 👍 Comfortable to wear
- 💡 Comprehensive sleep data
- 😊 Improved app after updates
- ✅ Works as advertised

**What reviewers complain about**

- ❌ Network error nonstop
- ❌ App won't sync with Apple Health
- ❌ App requires website login
- ❌ Device stopped working
- ❌ Bluetooth connection dropping

**Reported bugs**

- Network error nonstop
- App constant network error
- App won't sync with Apple Health
- App won't open unless signed into website
- Device stopped working

**Requested features**

- Add Apple Health integration
- Add vibration alarm
- Add sleep apnea monitoring (AHI)
- Add adjustable cards feature
- Allow editing of sleep time


## Frequently asked questions

### Is CIRCUL RING free?

CIRCUL RING is free to download, with no in-app purchases.

### Is SLEEPON 3 free?

SLEEPON 3 is free to download, with no in-app purchases.

### Which has better reviews, CIRCUL RING or SLEEPON 3?

CIRCUL RING is rated higher. CIRCUL RING averages 2.3 out of 5 from 34 ratings, while SLEEPON 3 averages 2.1 from 30 ratings.

### Do CIRCUL RING or SLEEPON 3 have ads?

Neither CIRCUL RING nor SLEEPON 3 shows ads.

### Which is updated more often, CIRCUL RING or SLEEPON 3?

CIRCUL RING ships an update every 3 weeks, and SLEEPON 3 every 3 weeks. Most recently, CIRCUL RING was updated on October 8, 2026 and SLEEPON 3 on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*